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Finding the Fourth Proportional to 139,968,692.70, 209,953,039.05 and 119,561,358.30

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Solution

The fourth proportional to 139,968,692.70, 209,953,039.05 and 119,561,358.30 is: 179,342,037.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,692.70 : 209,953,039.05 = 119,561,358.30 : x
  2. Step 2: Convert to fraction form
    139,968,692.70/209,953,039.05 = 119,561,358.30/x
  3. Step 3: Cross multiply
    139,968,692.70x = 209,953,039.05 × 119,561,358.30
  4. Step 4: Simplify right side
    139,968,692.70x = 25,102,270,528,030,944
  5. Step 5: Solve for x
    x = 25,102,270,528,030,944/139,968,692.70
  6. Step 6: Final answer
    x = 179,342,037.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.